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Will a Furnace Work Without a Thermostat?

Will a Furnace Work Without a Thermostat?

Your thermostat is a crucial piece of the HVAC puzzle in your home. Not only does it help regulate temperature, but by conserving your system’s energy, it helps prolong the life of both your heating and cooling units.

So how do you know that it’s really your thermostat that has a problem and not your heating system? And can you even use your heater without a thermostat? We’re going to answer those questions and give you a few tips on troubleshooting your thermostat.

Yes, Sort Of

Your furnace can work without a thermostat. The system is designed to operate independently of a thermostat, but the thermostat is an additional device that helps regulate when the system turns on and off.

This also depends on the fuel used for your heating system. If your power is out and you have an electric furnace, you won’t be able to use it even if the thermostat works fine.

Testing the Thermostat

You can start by looking back at your unit’s history. If you recently had a repair or tune-up, odds are the system is running fine. If you don’t hear any strange noises or smell strange odors near the system, that’s also a sign that the thermostat is to blame.

You can test if your thermostat is reading correctly by using a probe or infrared thermometer and comparing the readings. It may not exactly match, but they should be pretty close.

You can also deduce a thermostat issue if communication is off with your furnace. The furnace may click on at the wrong temperature, you may hear the fan running even when it’s turned off, or the temperature setting changes without you doing it. These are all signs that you need your thermostat connection looked at by a professional.

Reliable HVAC Service

Ostrom Electrical Plumbing Heating & Air Conditioning is your trusted resource for all things HVAC in the Roanoke community. Call us today at (540) 253-1559 to see how we can help you.